Crazy: a 7.65mm Luger is not a 32 ACP. The 7.65mm Luger, the original Luger caliber, is a bottlenecked cartridge, very similar to the 7.62x25mm Tok/30 Mauser round in appearance, but a couple of mm shorter - 22mm for the Luger, 25mm for the Tok. Both share the same rimless base as does the 9mm, 38 Super, 9x23. The 7.65mm Luger is the parent case for the 9x19mm or 9mm Luger. The 30 Luger puts a 93 gn .308 - .309 bullet downrange from a 4" bbl at about 1280'/sec. The Tok takes a 85 gn bullet (.308 - .309) and sends it downrange at 1400'/sec or better from a Tok. The 30 Mauser, from which the Tokarev round was 'morphed' by the commies, put a 88 gn .308 - .309 bullet downrange at about 1400'/sec.
The capability of the 30 Luger was limited by the relative strength of the toggle action used in the Luger pistols. However, there are/were two loading for the 7.65mm Luger; one for the pistol and one for the carbine, which was just a long barreled pistol but it is advised not to use the carbine rounds in the pistol.
The old Lyman manuals, and possibly newer ones too carry loading data for the 30 Luger. These loads are on the mild side and I would feel comfortable using them in a older pistol. Now, if you have old 9mm Walther P-38 hanging around you can get 30 Luger barrels made for them too.....